C library function cosh() usage and example

C Standard Library <math.h>

The cosh() function calculates the hyperbolic cosine value of a number.

Cosh() function prototype

double cosh(double x)

The cosh() function takes a single parameter (angle in radians) and returns the hyperbolic cosine value of the angle as a double type.

The cosh() function inmath.hDefined in the header file.

To find cosh() for long double or float, you can also use the following prototypes.

long double coshl(long double arg);
float coshf(float arg);

Example: C cosh() function usage

#include <stdio.h>
#include <math.h>
int main()
{
　　　　double x, result;
　　　　x = 0.8;
　　　　result = cosh(x);
　　　　printf("%lf hyperbolic cosine (in radians) = %lf\n", x, result);
　　　　x =　-0.8;
　　　　result = cosh(x);
　　　　printf("%lf hyperbolic cosine (in radians) = %lf\n", x, result);
　　　　x = 0;
　　　　result = cosh(x);
　　　　printf("%lf hyperbolic cosine (in radians) = %lf\n", x, result);
　　　　x =　1.5;
　　　　result = cosh(x);
　　　　printf("%lf hyperbolic cosine (in radians) = %lf\n", x, result);
　　　　return 0;
}

Output Result

0.8Hyperbolic cosine (in radians) of 00000 =　1.337435
-0.8Hyperbolic cosine (in radians) of 00000 =　1.337435
Hyperbolic cosine (in radians) of 0.000000 =　1.000000
1.5Hyperbolic cosine (in radians) of 00000 =　2.352410

C Standard Library <math.h>